[UpstateNYBill]

Yeah, we need more info. What do you mean by it won't start? Does the engine turn over when you crank the ignition, but it fails to start? Or when you turn the key, all you hear is a clicking sound, etc?

 

[UpstateNYBill]

Before getting into replacing sensors, have you verified that you have spark and fuel at the necessary places?

 

[UpstateNYBill]

I turn the ignition over and you can hear that the motor wants to turn over but it won't.

Sorry, but this sentence is incomplete. It won't what?? Won't turn over, or won't start?

If you are saying it wants to turn over, but won't turn over fast enough to start the engine as if the battery is near dead, then that could be anything from a worn starter or a bad connection (ground or otherwise) or a battery drain to something more serious that is engine related. My son once called me to say his car died while driving down the road, and wouldn't restart. What had happened was the a/c compressor seized, and stopped the engine. By the time I got there hours later, the seized a/c compressor had cooled down, and I just started the car and drove away.

If, on the other hand, you are saying the engine wants to turn over (fast) but won't start, then go back to the basics of spark and fuel before going any further. Keep it simple. You could have something as simple as a bad ignition wire or coil, or plugged up fuel filter, common problems in an older car.